Browsing by Author "Castillo, Ricardo"

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    Diez años desde la implementación del RIS PACS de la Clínica Alemana de Santiago: impacto de la tomografía computarizada en el uso y disponibilidad de archivo
    (Sociedad Chilena de Radiologia, 2016) Bosch, Enrique; Castillo, Ricardo; Cea, Óscar; Salinas, César; Rivas, Javier; Díaz-Narváez, Víctor
    RIS PACS systems have become indispensable for managing, distributing and archiving digital images. This study evaluated the impact of Computed Tomography in the Clínica Alemana of Santiago's PACS image service. The PACS database was reviewed using IMPAX BI software, and 2,267,683 studies between 2005 and 2014 were examined. Computed Tomography examinations made up 10.67% of the studies archived in PACS, but its weight in TB is 50.10% of the total. The impact of the studies of Computed Tomography were not properly dimensioned or anticipated, which has impacted on the expected availability for one year online studies. This study has adequately assessed the impact of Computed Tomography in PACS’ storage availability, and how it should be considered when planning the implementation of a PACS.
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    Reactividad y evolución de 4.022 tests de parche en dermatitis de contacto realizadas entre 1995 y 2011 en Santiago de Chile
    (Sociedad Médica de Santiago, 2015) Sabatini, Natalia; Cabrera, Raúl; Bascuñán, Claudia; Díaz-Narváez, Víctor; Castillo, Ricardo; Urrutia, Mauricio; Sepúlveda, Rodrigo
    Background: Allergic Contact Dermatitis is a classic delayed hypersensitivity reaction. Aim: To study the reactivity and evolution in Chilean patients by gender, using the standard European patch test. Materials and Methods: The results of the European standard patch test applied to 4,022 patients aged 1 to 93 years (64% female) with Allergic Contact Dermatitis, diagnosed between January 1995 and August 2011, were retrospectively analyzed. Results: From a total of 4,022 patients, 2,439 (60.6%) had a positive reaction. Among reactive patients, 1,854 (76.04%) were female and 584 (23.96%) male. The most common positive allergens were nickel (35.3%), cobalt (15.1%), fragrance mix (14%), chromium (8.7%) and balsam of Peru (8.5%). In females, nickel was the most common reactive antigen (34.28%), and in males, fragrance mix (15.7%). During the period 2003-2011, an increased reactivity to nickel (26.6%) and a decreased reactivity to p-phenylenediamine (29.6%) and fragrance (42.8%), was observed. Conclusions: Fragrance mix is the most common reactive allergen in males and the third for females. Nickel is the leading allergen in the female group and the second of importance for males, making it the most significant allergen for the Chilean population. We also observed that the reactivity of some allergens evolves and varies over time.

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